Car-truck.



n. M. PFLAGEm CAR T RUCK. APPucATloN FILED luLY 6.1911.

Patented sm. 3,1918.

uurrnn ererne erreur orrron HARRY M. PFLAGEB', 0F ST. LOUS, MISSOURI, ASSIGNQR TO COMMONW'EALH STEEL COMPANY, OF ST. LOUIS., MISEOUR, A CGRORATGN OF NEW JERSEY,

Gewonnen.

'epeciiwetonv of Letters Eatent.

LNSANES.

iaienierl Sept. 2i, igih Application le. July 6, 12N; Serial No. 179,622.7.

t citizen ofi-he United States, residing ai', Si.'

Louis, Missouri, here invented a certain new und useful improvement in Cgir-Trucks,v of

which the following is a full, clear, end exact description, such as will enable others skilled in the ortie which it appertains to make and use the same, reference being had to the aocompanying drawings,` forming port oi this specification.

My invention relates generally to railway car truck Construction and more particu larlv to new and improved means'for yieldingldy supportingf the truck-frame upon the journal boxes, my present invention being an improvement on e similar const-motionv disclosed'in Patet-No,'l,l8,903, .issue-ii to the assignee oi Clarence H. Howard and my self November 24, 1914;. l

The principal objects of my invention erei to provide increased flexibility ot the truck and equalize the distribution oi Weight upon lll of inet-ruck Wheels; to provixie a ooxnperatively simple iruclr. frame support which, by virtue of iis arrangement and construetfion, will be eeotive in distributing and ebeorbng shocks and vibration due io mick irregularities and preventing saicl shocks and vibration' from being Atr:unsmittel to the car body, thereby making 'the ridingmovement oi2 said body more easy enel gentle; and to dispose the flexible supporting ineens so that it will in nowise interfere winkt-he free inspeotiongrepeir and. adjustment of the brakes und brake rigging' essocietefl with the truck and the Wheels ihereof.

With the foregoing enfl einer objects in View, my invent-ion consists in plurality .of leaf springs, preferably 'loeaie within the wheel pieces of the truck frame and disposed so that their ends neer on the journal boxes assoeinre with the truck and the truck frau-ne bearing directly upon said springs ai, points inrermediate their ende.

My invention further Consists in. Certain novel features ei construetion and arrange ment of parts, hereinafter more fully' lem scribed and olaime enel illustrated in elle :wvompnuymg ir'nwings inv-Winch :Figure lis e bo'plplan view oi-ziieeizie varound the thiolesiportion ,of eacii' and holds the leaves in proper assembled leo relation. Theben of each henri 18 1s @refer portion of a six' wheel irufzk iframe wiili which my improved supporting niezinslis associated; l

Fvg, is a side elevational. View of the 5% truck iframe :incl showing my improved supporting means in position for use thereupon;

Fig. E isa fleiail' :sectional View` of islie bearings between the inner ends of ille Suporting'spijings :incl the centr-al one of the 6@ gournal boxes; l

Fig. e is en enlergecl leieil seoion Jae-lien approximately on the line -Jgf. oi Fig, l.

The truck freine Shown in the accom penying drawings is o' ecce-,piled six @5 Wheel type5 said iframe being preereliljg met inegrel anni comprising sulisentielly 'uollow side rails or wheel pieces L enel rails E, ami transom members C. Y

The hollow wheel piece A is Substantially 'i9 boxehape in erose section and comprises an.' inner Wall 10, an outer Wall 1L top plaie 155 and bottoni plate 13. The bottomv plaie is out nvv'oy al: suitable points for nooo l modetioin of the journal noxes the leiter containing' the usuel bearings fertile wlieel carrying axles :mil snicl journal boxes ing positioned oeiween the usuel pefies'ml jaws 16? the same neing iixei to und riep 1fiing'froin elle 'wheel piece L The 'o iviwer Si);

well l1 of die wheel pieceisent owey int suitable points to permit the ready ineer i iion or removal oi' tlieiruck frame support-' l' ing; members. These supporting memlerses .e Shown are in the orin oetraigghi; leef' 255 springs there being n noir of Seid springs dispose wiiliin eueh hollow' Wheel pioeeo the trnok frame, f

The individuel members or leaves of eeen.

spring ere graduae in ienglzlirom top io 59 bottom, tlm-i is, the Shortest-leef is :itin e top anni the intermefllate leaves gradually increase in'lengtil toward the longes lee-i 4or leaves et the bocom and snilennes disel posefl so that the liiolestf portion'o lie D z spring is ai. a point toone.eieofiirefiougi- 'ordinal renier-elioreef,y i

retainingeleeve or henri '15 lses pring- 'ebly ur've. lengthwise' jillueireieriin Sil " members Lessons l and this curved surface bears directly against a flat bearing surface 19 formed between lugs-20, the same depending from the underside of top plate 12.

The ente-rend of each spring 17 is provided on its underside with a bearing block 21., the saine being concave on its underside said bearing block resting directly upon a roller 22, the latter being positioned upon i a concave bearing surface formed in the top of a block 23. This bearing block rests directly upon the corresponding one ot the end journal boxes.

. The inner ends ot each pair of springs 17 overlie the middle one of the journal boxes and carried by said inner ends are blocks 2l provided on their undersides with concave bearing surfaces which rest directly upon rollers These rollers are positioned upon concave bearing surfaces formed in the top ol? a block E26, the latter being positioned on the central one of the journal boxes. Thus, 'both ends of each spring rest upon roller bearings, the latter being located on bearing. blocks carried by the journal boxes.

The distance from the bands -18 to the outer ends of the springs or the ends which rest upon the end jourrA l boxes is approximately half the distance from said bands to the inner ends of the springs or the endswhich rest upon the central journal box, such arrangement being necessary to equalize the weight of the truck frame and parts carried thereby upon the journal boxes.

.in my improved construction it Will be understood that the springs 17 not only perform their usual and expected functions but also perform the functions of equalizing members, for they are instrumental in equalizing the carried Weight upon the journal boxes and they also equalize and distribute service shocks and Vibration resulting from the passage of the Wheels of the truck over rough portions of the tracln' crossings, switches and the like.

ln the event that any one pair of Wheels are elevated or lowered to an appreciable degree relative to the other Wheels, the corresponding springs acting as equalizing will Arock upon their fulcrums, namely, the points of bearing between the hands 18 and the bearing faces 19, and as this movement l takes place, the fulcrum points will be slightly shifted relative to the ends ot the springs so that the distance between 'the Atulcrumsv and the raised or lowered ends of the springs is materially shortened, lilrcfise increasing the distance between the tulcrm'ns and the opposite ends et vthc springs. rlihis action necessarily gives rile lowered rnd ot thc springl the advantage ir power and the change oi' position ot he tule; ,m point gradual and in proportion "ne u' ement o? tbc spring. Neccssarily, l et they springs are raised or lowered, the bearing blocks on the ends thereof will ride freely without friction upon the corresponding roller bearings, Which latter are carried by the bearing blocks on the journal boxes.

My improved construction does away with all rigid or non-elastic equalizing members, affords an efficient yielding and flexible support for the truck frame. thereby making the riding movement of the supported lcar body more easy and gentle. and all service shocks and vibrations which may be imparted to the Wheels are absorbed or equalized and consequently prevented from being transmitted to the canbody. By virtue of the fact that the supporting members are located Within the Wheel pieces of the truck 'traine and said wheelJ pieces are located in a plane. above the brake beams and shoes, the latter, together with practically all of the brake rigging. are free and open to inspcction and likewise readily accessible in the event ci. repairs and adjustments.

lt will be readily .understood that minor changes in the size, form and construction of the various parts of my improved car truck can be made and substituted .for those herein shown and described. Without departing from the spirit of my invention, the scope of which is set forth in the appended claims.

I claim:

l. The combination with a truck frame and its journal boxes. of resilient equalizing members having,r rolling supports on the journal boxes and serving as a yielding supe port for the truck frame.

2. The combination with a truck frame and its journal boxes. of resilient equalizing members having rolling supports on the journal boxes and serving as a yielding support for the truck frame, which springs are located substantially Within the Wheel pieces of the truck frame.

3. The combination with a truck frame and its journal boxes, of leaf springs interposed between said journal boxes and truck frame, and roller bearings between the journal boxes andsaid springs. Y.

4. The heroin described tlexible'support for railway car truck frames, comprising leaf springs, the ends of which have rolling supports on the journal boxes of the truck trame, and said truck frame resting directly upon said springs.

The combination with a car truck frame and its journal boxes, of loaf springs intcrposed between the truck frame and the journal boxes and havingl rolling supports upon the latter, which lea t springs yieldingly sup` port the truck tramo and also serve as oqualizers to distribute the ueight of the truck trame and parts carried thereby upon the journal boxes.

6. ln a car truck, a flexible eoualizing ing upon rolling supportspn the outer pair I member serving as a support for the car V`truck and having rolling supports upon the journal boxes associated with said truck, said flexible equalizer having a rocker bearing upon the truck frame. j

8; In a car truck, a flexible equalizing member serving as a support for the car truck' andsupported by the journal boxes associated with said truck, and rolling bearings between said flexible "equalizing` member and said journal boxes.

9. The combination withl a'car truck and its journal boxes, the wheel pieces of which truck are substantially hollow, of a pair of flexible equalizing members disposed within each wheel piece with their outer ends'restof journal boxes and their inner ends upon rolling supports on the central journal box, and said equalizing members serving as a yielding" support for the truck frame.

v10. The combination' with a truck frame, of a flexible equalizing-member. having a shiftable fulcrum on said frame, 'and vthe ends of `said member being supported by the journal boxes yassociated with saidrame.

11. The combination with a truck frame, of a fiexible equalizing member having a shiftable fulcrum on said frame,the ends of said member being supportedby the journal boxes associated with said frame; and roller bearings between the ends of said member and the journal boxes associated with the truck frame. ,f v

`In testimony whereof I^hereunto aiiix my signature this 26th day of June,'-1917.

HARRY M. PFLAGER. 

